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Blaney-Criddle Model explanation and use <br />July 28, 1998 <br />Page 7 <br />This evaluation is tabulated below the main water balance calculation table. <br />Along with this tabulation is a graphic presentation of this information. <br />The tabulation and graph represent a five year period starting with the <br />month of January (60 months). <br />In the foreground of the graph is the monthly water balance quantity either <br />positive (all the water generated that month is unused) or negative (a <br />deficit in the water balance). Behind this on the graph is the cumulative <br />unused water quantity (the total of the month's water usage plus any water <br />left in storage from the previous month). This visual presentation is <br />intended to aid in the interpretation of the water balance calculations for <br />the facility; it is not a design calculation. An engineer should be consulted <br />to evaluate and design any water storage system. <br />D. ESTIMATED TOTAL STORAGE REQUIRED: <br />The total storage estimation is based on the total of the five day storage <br />requirement, the five days of precipitation, and the storage of unused <br />effluent. <br />Storage requirement estimation: FOR INTERNAI_ USE ONI.:Y! <br /> Storage required: gallons: <br />If five day storage required: (five <br />days flow plus five days <br />maximum rain): 2,006,322 <br />Storage required based on long <br />term water balance: 14,372,432 <br /> ---------------------------------- <br />Estimated Total storage required: 16,378,754